USRE8507E - Improvement in graining-machines - Google Patents

Description

G. PELSTRINGQ (Training Machine. No. 8,507. Reissued Nov. 26,1878.

lllllllllll iizil contact with counterpart of GEORGE PELSTRING, OF CINCINNATI, OHIO.

IMPROVEMENT IN GRAlNlNG-MACHINES.

Specification forming part of Letters Patent N 0.

204,078, November 26, 1818; application dated May 21, 1878; Reissue No. filed October 28, 1878.

8,507, dated To all whom it may concern Be it known I of Cincinnati, Hamilton county, Ohio, have invented a new and useful Wood-Graining Machine, of which the following is a specification:

My invention has for its object the imitation of the grain of the more valuable woods on the surface of a cheaper kind-as, for example, 'the grain of Spanish cedar'upon common poplar.

The device consists, essentially, of a revolving drum or cylinder whose peripheral surface, having protuberances corresponding to the depressions of the grain of wood to be imitntcd, serves to impress on any board passed in contact with and pressed against it indenmons resembling those of the more .cost] y Wood; but preliminary to the indentation of the lumber by the engraved surface of my said drum the said surface is caused to revolve in a color-imparting apparatus. Such revolving drum, with its coloring device, in conjunction with suitable feeding and supporting or pressing mechanism, causes a board while beingindented to be at the same instant and by the same act stained or colored in the indentations.

My graining apparatnsin its most complete form comprises rollers for drawing or driving the lumber through the machine, rollers for abrasion of the board surface and for filling the indentations with coloring matter, &c., and finishing-rollers.

the accompanying drawings, Figure 1 is a longitudinal scction,-and Fig. 2 is a top view, 'of a machine embodying my invention. Fig. 3 represents a part of the face of the graining- I My graining-drum A is of such dimensions the peripheral face of this drum is an electroor engraved plate, a, the exact mold or whatever grain of wood be desired to imitate. Sct-screws B B the drum to be adjusted to produce any de- Bircd depth of grain-impressions, the screw B serving to limit such depth, and the screw B to aid the weight of thc'drnm itself in impartingsnflicient pressure. Where, however; the weight of-the drum is'foumhto s'giiicc for it may tllilJ I, GEORGE PELSTRING,

enable the effective pressure, the upper screw, 13, may be elevated out of contact. Immediately below the drum is a revolving or other suitable bed or bearer, O. of the forms familiar in machines for dressing lumber, and, as in such machines, either it or the operative mel'nbcr A must be capable of yielding to irregularities of thickness of; the stuff and of exerting a pressure thereupon, and, as in such machines, either or both members may be positively rotated, so as to discharge the functions of a feed.

In order that the drum A at the instant of indenting may impart the desired color to the indentations, I arrange in contact with its pcriphery a color-imparting apparatus, which is substantially as follows: J is a tank, suitably secured to the frame,'and' containing the desired dye, stain, or color material. This tank and the rollers K k for transferring the color in suitable quantities to the summits of the protuberances on the drum-face are similar to the apparatus employed in inking the type in printing-machines.

In addition to the abovcesscntial members there maybe employed other devices, as follows: One or more pairs of teed-rollers,- D 1) D I), may be employed, so geared thattheir peripheries will move in unison with the iir dentin g-drum -A. Such feed-rollers may be provided on either or both sides of the drum. Thus, the receiving end of the machine may have one or more rollers, l), to support and facilitate the entrance of the stud", or one or more pairs of feed-rollers like those represented on the delivery side. There may be also employed one or more finishing-rollers, E E, clothed around their peripheries with canvas, india-rubber, leather, or other suitable substance somewhat elastic. These rollers are so geared as to rotate at a high speed in contrary direction to the feed. Journaled under. neath each finishing-roller is a rotary bed, 1'.

All the supporting members, 0 D D D" 1 may be journaled in a frame, G, capable of vertical adjustment, said frame having for that purpose inclined lower edges, and being confined to a vertical path by the main frame Z, and resting upon a correspondingly-inclined H, shiftable horizontally surface of a frame,

,by means of a screw,

I. This arrangement This bearer may possess an y' enables all the members which constitute the bed of the machine to be simultaneously elevated or depressed to any desired levelto accommodate thickness of the stufl.

The above-described apparatus may constitute an attachment foror be used in direct connection with a planing or other wood-workin g machine.

Before the described action of the engraved and colored drum the lumber may have imparted to it any desired ground or body stain, combined with any vehicle known to furniturefinishers, such as glue, paste, varnish, and the' like. I

I do not claim, separately considered, a cyli nd rieal surface capable of producing indented grain effects; nor do I claim one capable of imparting color-marks merely.

I claim as new and of my invention- 1. In a wood-graining machine, a cylinder, A, provided with an engraved or embossed periphery in counterpart of the grain to be imitated, in combination witln'and arranged in contiguity to, the described color-imparting device K k, whereby the cylinder is adapted to simnltaneol'lsly indent and color the so-indented parts of a board suitably fed and pressed against it.

2. In a wood-graining machine, the drum A, having on its peripheral face the plate a, presenting the counter-impression of the grain to be imitated, in combination with the described which consists in impressing the surface of a board. with indentations and by the same operation coloring such indentations so as to resemble cedar or other wood grain, substantially as set forth.

In testimony of which invention I hereunto set my hand.

GEO. rELsTnI Ne.

Witnesses GEO. II. KNIGHT, W. T. J UDKINS.

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